| Primary satellite | Secondary satellite |
| Name | NOAA 6 | IRIDIUM 155 |
| Spacetrack catalog number | 11416 | 43573 |
| Radar cross section | large | large |
| Epoch of two-line elements (UTC) | 2021 Jan 25 17:49 | 2021 Jan 25 15:53 |
| Time of closest approach (UTC) | 2020 Dec 08 16:12:26.927 |
| Minimum distance | 8.364 km |
| Height difference | 6.126 km |
| Relative speed | 14.763 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 72.2°N, 130.2°W |
| Height | 785 km |
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